/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package kafka.examples;

import java.util.Properties;

import kafka.producer.KeyedMessage;
import kafka.producer.ProducerConfig;

public class Producer extends Thread {
	private final kafka.javaapi.producer.Producer<Integer, String> producer;
	private final String topic;
	private final Properties props = new Properties();

	public Producer(String topic) {
		props.put("serializer.class", "kafka.serializer.StringEncoder");
		props.put("metadata.broker.list", KafkaProperties.BROKER_LIST);
		
		//指定压缩格式
		props.put("compression.codec", "gzip");
		//指定需要压缩传输的topic  这些只对 send set 好使，单个消息不好使
		props.put("compressed.topics", topic);
		
		props.put("producer.type", "async");
		props.put("queue.enqueue.timeout.ms", "-1");
		props.put("batch.num.messages", "200");
		// Use random partitioner. Don't need the key type. Just set it to
		// Integer.
		// The message is of type String.
		producer = new kafka.javaapi.producer.Producer<Integer, String>(
				new ProducerConfig(props));
		this.topic = topic;
	}

	public void run() {
		String threadName = Thread.currentThread().getName();
		int messageNo = 1;
		while (true) {
			String messageStr = new String("Message_" + messageNo);
			producer.send(new KeyedMessage<Integer, String>(topic, messageStr));
			System.out.println(threadName + " 发送消息：" +messageStr);
			messageNo++;
			try {
				Thread.sleep(1500);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}

}
